ephedrine

"The patient followed the doctor's instructions carefully. "

"We prepared the spacecraft for takeoff."

"The pharmacist filled my grandmother's prescription for pain medication. "

"The scientist carefully examined the substance to determine its chemical composition. "

"My grandmother takes several medications for her high blood pressure. "

"The coffee bean contains caffeine, which is a stimulating alkaloid. "

"the male species"

"The doctor prescribed aspirin."

"To explain a chapter of the Bible."

"The main ingredient in Grandma's famous chocolate chip cookies is butter. "

""My doctor prescribed a sympathomimetic to help open my airways and relieve my asthma symptoms." "

"The herbal supplement contained ephedra, a shrub sometimes used for weight loss. "